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rocket, in aeronautics
(Encyclopedia) CE5 Relative positions of the components of the Saturn V rocket, the U.S. space vehicle used in the moon missions rocket, any vehicle propelled by ejection of the gases produced by…McPhee, John Angus
(Encyclopedia) McPhee, John Angus, 1931–, American journalist and nonfiction writer, b. Princeton, N.J., A.B. Princeton, 1953. He was an editor at Time magazine (1957–64) before becoming (1965) a…mks system
(Encyclopedia) mks system, system of units of measurement based on the metric system and having the meter of length, the kilogram of mass, and the second of time as its fundamental units. Other mks…echo, in acoustics
(Encyclopedia) echo, reflection of a sound wave back to its source in sufficient strength and with a sufficient time lag to be separately distinguished. If a sound wave returns within 1&fslsh;10…Douglas, Donald Wills
(Encyclopedia) Douglas, Donald Wills, 1892–1981, aviation pioneer and aerospace executive, b. Brooklyn, N.Y., B.S. Massachusetts Institute of Technology, 1914. He helped design the first wind tunnel…Aravena, Alejandro
(Encyclopedia) Aravena, Alejandro 1967–, Chilean architect, b. Santiago, grad. Pontifical Catholic Univ. of Chile, Santiago (1992). Inspired by public service as much as by aesthetic concerns, he has…Emmanuel Philibert
(Encyclopedia) Emmanuel PhilibertEmmanuel Philibertāmänˈwĕl fēlēbĕrˈ [key], 1528–80, duke of Savoy (1553–80), called Ironhead. He succeeded his father, Charles III, who had been dispossessed of his…monism
(Encyclopedia) monismmonismmōˈnĭzəm [key] [Gr.,=belief in one], in metaphysics, term introduced in the 18th cent. by Christian von Wolff for any theory that explains all phenomena by one unifying…Young, Thomas
(Encyclopedia) Young, Thomas, 1773–1829, English physicist, physician, and Egyptologist. He established (1799) a medical practice in London and was elected (1811) to the staff of St. George's…welding
(Encyclopedia) welding, process for joining separate pieces of metal in a continuous metallic bond. Cold-pressure welding is accomplished by the application of high pressure at room temperature;…Trending
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